hassimi abu hasan, siti rozaimah sheikh abdullah, siti kartom kamarudin, noorhisham tan kofli and nurina anuar.  (2014).  kinetic evaluation of simultaneous cod, ammonia and manganese removal from drinking water using a biological aerated filter system.  - separation and purification technology.  130:56-64. 

nurleyna yunus, jamaliah md jahim, nurina anuar, siti rozaimah s. abdullah, norhisham t. kofli.  (2014).  batch fermentative hydrogen production utilising sago (metroxylon sp.) starch processing effluent by enriched sago sludge consortia.  - international journal of hydrogen energy.  19937-19946. 

n.s.shamsul, s.k.kamarudin, n.a.rahman, n.t.kofli.  (2014).  an overview on the production of bio-methanol as potential renewable energy.  - renewable & sustainable energy reviews.  33:578-588. 

hassimi abu hasan, siti rozaimah sheikh abdullah, siti kartom kamarudin, noorhisham tan kofli, nurina anuar.  (2013).  simultaneous nh4+-n and mn2+ removal from drinking water using a biological aerated filter system: effects of different aeration rates.  - separation and purification technology.  118:547-556. 

hassimi abu hasan, siti rozaimah sheikh abdullah, siti kartom kamarudin and noorhisham tan kofli.  (2012).  effective microbes for simultaneous bio-oxidation of ammonia and manganese in biological aerated filter system.  - bioresource technology.  124:355-363. 

hassimi abu hasan, siti rozaimah sheikh abdullah, noorhisham tan kofli, siti kartom kamarudin.  (2012).  isotherm equilibriums of mn2+ biosorption in drinking water treatment by locally isolated bacillus species and sewage activated sludge.  - journal of environmental management.  111:34-43. 

hassimi abu hasan, siti rozaimah sheikh abdullah, siti kartom kamarudin and noorhisham tan kofli.  (2011).  response surface methodology for optimization of simultaneous cod, nh4+?n and mn2+ removal from drinking water by biological aerated filter.  - desalination.  275(1-3):50-61.